<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <link rel="stylesheet" href="static/plugins/bootstrap-3.4.1/css/bootstrap.css">
    <style>
     .c1 {
            height:300px;
             width:400px;
             border:5px solid #ccc;
             margin-top:100px;
             margin-left:auto;
             margin-right:auto;
             padding: 10px;
             background-color: #f2f2f2;
             border-radius:10px;
             box-shadow: 5px 5px 5px #aaaa;
          }
    .c1 h1
    {
        margin-top:10px;

        text-align:center;
    }


    </style>
</head>
<body>

<div class="c1">
    <h1>用户登录</h1>
    <form class="form-horizontal">
        <div class="form-group">
            <label for="inputEmail3" class="col-sm-2 control-label">用户名</label>
            <div class="col-sm-10">
                <input type="email" class="form-control" id="inputEmail3" placeholder="用户名">
            </div>
        </div>
        <div class="form-group">
            <label for="inputPassword3" class="col-sm-2 control-label">密码</label>
            <div class="col-sm-10">
                <input type="password" class="form-control" id="inputPassword3" placeholder="密码">
            </div>
        </div>
        <div class="form-group">
            <div class="col-sm-offset-2 col-sm-10">
                <div class="checkbox">
                    <label>
                        <input type="checkbox"> Remember me
                    </label>
                </div>
            </div>
        </div>
        <div class="form-group">
            <div class="col-sm-offset-2 col-sm-10">
                <button type="submit" class="btn btn-success">登 录</button>
            </div>
        </div>
    </form>
</div>

</body>
</html>



